Compared to a few guys in our league, you're no whale. And you're tall so they'd be tempted to play you at 1B anyway unless you can pitch. But Ponce is for 50+ (IIRC) and you're not 50 - you might want to look into the DCMSBL - they have a 30+ division.
Ponce has multiple divisions. 30+, 40+ and 50+. But you can play as young as you can handle. That is, you can be 45yo and play 30+, but not the other way around.
Whale? How big?